16 / 300
Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email:
enquiry@furse.com• Web:
www.furse.comTSC-0912 - 09.10.12
Introduction
Technical services
Technical advice, support and design services
National and international standards dictate the
requirements for design and installation of
lightning protection and earthing systems.
Given the complexity of these standards, confusion and
misinterpretation can easily lead to project delays,
budget overruns and costly extra time on site.
Our aim is to help customers to avoid these risks, by
fully supporting our Furse product sales with a range
of high quality technical support services.
Furse technical services
Furse technical services team actively participates in the
development of national and international standards,
and offers the ideal starting point for customers
confronted by the challenges found in complex
lightning protection projects.
Our engineers can provide advice and assistance on all
aspects of lightning protection, transient overvoltage
and earthing systems, including:
Structural lightning and transient overvoltage
protection system design
Earthing design
Supply of comprehensive drawings
Soil resistivity surveys
Full earth modelling analysis
Earth resistance measuring
Bespoke in-house and hosted training seminars
Using the latest computer aided design & draughting
software we can produce detailed or budgetary earth
electrode and lightning protection system designs, in
compliance with any given standard and whatever the
complexity of system required.
Structural lightning and transient
overvoltage protection
In order for us to design a structural and/or transient
overvoltage lightning protection system, we need the
following information:
Design standard, e.g. BS EN 62305, NFPA 780,
IEC 62305
A dimensioned roof plan & external elevations
Construction details, e.g. steelwork, reinforced
concrete, roofing materials, etc
A single line diagram indicating voltage and
current for each electrical system, e.g. power,
data, telephones, fire alarms, CCTV
Details of essential equipment, e.g. network
servers, PLC controllers
Power earthing systems
There are a number of recognised national and
international standards governing the provision of
earthing systems. Our technical experience allows us to
provide designs to any of these standards.
To design a power earth electrode system, we need the
following information:
Design standard, e.g. BS 7430, BS 7354, Ansi IEEE
Std 80, ENA TS 41-24 etc
A dimensioned site plan
Overall electrical single line diagram
Soil resistivity survey results
Earth fault current magnitude (due consideration
should be given to the proportion of current
flowing through cable sheaths or the aerial earth
wires of overhead transmission lines)
Earth fault current duration